add build/ to gitignore

.gitignore

@@ -1,3 +1,6 @@
+# Hiisi
+build/
+
 # ---> Emacs
 # -*- mode: gitignore; -*-
 *~
@@ -9,46 +12,6 @@ auto-save-list
 tramp
 .\#*
 
-# Org-mode
-.org-id-locations
-*_archive
-
-# flymake-mode
-*_flymake.*
-
-# eshell files
-/eshell/history
-/eshell/lastdir
-
-# elpa packages
-/elpa/
-
-# reftex files
-*.rel
-
-# AUCTeX auto folder
-/auto/
-
-# cask packages
-.cask/
-dist/
-
-# Flycheck
-flycheck_*.el
-
-# server auth directory
-/server/
-
-# projectiles files
-.projectile
-
-# directory configuration
-.dir-locals.el
-
-# network security
-/network-security.data
-
-
 # ---> Linux
 *~
 
@@ -64,3 +27,8 @@ flycheck_*.el
 # .nfs files are created when an open file is removed but is still being accessed
 .nfs*
 
+.idea
+*.log
+tmp/
+
+build/

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "3rd/SDL"]
+	path = 3rd/SDL
+	url = https://github.com/libsdl-org/SDL.git